BUILDDIR = build
OUT = main
SRC_DIR = src
INCLUDE_DIR = inc

build: mkdir main
all: mkdir main run

mkdir:	# create build directory
	mkdir -p $(BUILDDIR)

run:	# run binary
	./$(BUILDDIR)/main

main: lex.yy.c	yacc.yy.c
	cc -Wall -I$(INCLUDE_DIR) $(SRC_DIR)/extio.c $(BUILDDIR)/yacc.yy.c $(BUILDDIR)/lex.yy.c -o $(BUILDDIR)/$(OUT)

# generate c file for lex
lex.yy.c:
	flex -o $(BUILDDIR)/lex.yy.c $(SRC_DIR)/lexer.l

# generate c file for yacc
yacc.yy.c:
	yacc -d -o $(BUILDDIR)/yacc.yy.c $(SRC_DIR)/parser.y

clean: # wipe the build directory
	rm -f $(BUILDDIR)/*